<template>
  <div class="container">
    <div class="app-container">
      <el-tree
        default-expand-all
        :data="depts"
        :props="defaultProps"
        :expand-on-click-node="false"
      >
        <template v-slot="{ data }">
          <el-row
            style="width: 100%; height: 40px;"
            type="flex"
            justify="space-between"
            align="middle"
          >
            <el-col>{{ data.name }}</el-col>
            <el-col :span="4">
              <span class="tree-manager">{{ data.managerName }}</span>
              <!-- $event 实参 表示类型 -->
              <el-dropdown @command="operateDept($event, data.id)">
                <!-- 显示区域内容 -->
                <span class="el-dropdown-link">
                  操作<i class="el-icon-arrow-down el-icon--right" />
                </span>
                <!-- 下拉菜单选项 -->
                <el-dropdown-menu slot="dropdown" >
                  <el-dropdown-item command="add">添加子部门</el-dropdown-item>
                  <el-dropdown-item command="edit">编辑部门</el-dropdown-item>
                  <el-dropdown-item command="del">删除</el-dropdown-item>
                </el-dropdown-menu>
              </el-dropdown>
            </el-col>
          </el-row>
        </template>
      </el-tree>
    </div>
    <add-dept ref="addDept" :show-dialog.sync="showDialog" :current-node-id="currentNodeId" @updateDepartment="getDepartmentList" />
  </div>
</template>

<script>
import { getDepartmentListAPi,delDepartmentAPi,} from "@/api/dapartment";
import { transListToTreeData } from "@/utils";
import addDept from "./add-dept.vue";
export default {
  components: { addDept },
  data() {
    return {
      depts: [],
      defaultProps: {
        children: "children",
        label: "name",
      },
      showDialog: false,
      currentNodeId: null, // 存储当前点击的id
    };
  },
  created() {
    this.getDepartmentList();
  },
  methods: {
    operateDept(type, id) {
      if (type === "add") {
        this.showDialog = true;
        this.currentNodeId = id
      }
      if (type === "edit") {
        this.showDialog = true;
        this.currentNodeId = id 
         // 父组件调用子组件的方法来获取数据
         this.$nextTick(() => {
          this.$refs.addDept.getDepartmentDetail() // this.$refs.addDept等同于子组件的this
         })
        }
      if (type === "del") {
        this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning' 
        })
        .then(async() => {
          await delDepartmentAPi(id)
          this.getDepartmentList()
          this.$message.success("删除成功")
        })
      }
    },

    getDepartmentList() {
      getDepartmentListAPi().then((res) => {
        this.depts = this.transListToTreeData(res, 0);
      });
    },
   
    transListToTreeData(list, rootValue) {
      const arr = [];
      list.forEach((item) => {
        if (item.pid === rootValue) {
          const children = transListToTreeData(list, item.id);
          item.children = children;
          arr.push(item);
        }
      });
      return arr;
    },
  },
};
</script>

<style scoped>
.app-container {
  padding: 30px 130px;
  font-size: 14px;
}
.tree-manager {
  width: 50px;
  display: inline-block;
  margin: 10px;
  margin-right: 50px;
}
</style>
